(formerly: Alec Norton, until 1999)
| 2001--present | Professor, Florida State University |
| 1999--2001 | Senior Research Consultant, MSCI-Barra, Inc., Berkeley, CA |
| 1989--1999 |
Assistant Professor, University of Texas at Austin 1989-92 NSF Mathematical Sciences Postdoctoral Research Fellow |
| 1990--1991 | Visiting Assistant Professor, Indiana University, Bloomington |
| 1987--1989 | Visiting Assistant Professor, Boston University |